User Equipment SCG Deactivation for Low-Traffic Power Control
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Solution Overview
Problem
The challenge of reducing power consumption in user equipment (UE) configured with dual or multi-connectivity, where the secondary cell group (SCG) is maintained despite low communication traffic, leading to increased power consumption.
Innovation Solution
A method for UE to deactivate the SCG by suspending transmissions, timers, and measurements, and switching to dormant bandwidth parts, along with specific reporting mechanisms for SCG measurement results when the SCG is deactivated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the UE maintains communication with both MCG and SCG to achieve high data rate, then the data transmission capability is improved, but the power consumption of the UE increases
Solution Approach 1:
The patent implements dynamic management of SCG activation and deactivation based on traffic conditions. The UE can switch between active and dormant states of the SCG, adjusting the level of monitoring and measurement activities dynamically. This allows the system to maintain high data rates when needed while reducing power consumption during low-traffic periods.
Solution Approach 2:
The patent changes operational parameters of the SCG by transitioning between different states (active, dormant, deactivated). When moving to dormant state, the UE reduces monitoring frequency and measurement activities, effectively changing the operational parameters to balance performance and power consumption.
2Use of energy by moving object
If the UE deactivates the SCG to reduce power consumption, then the power consumption is reduced, but the capability to perform SCG measurement result reporting is affected
Solution Approach 1:
The patent performs preliminary measurements and evaluations while in dormant state, preparing measurement results in advance. This allows the UE to have measurement data ready before full activation, reducing the need for intensive real-time measurements and maintaining reporting capability with reduced power consumption.
Solution Approach 2:
The patent implements periodic measurement and reporting mechanisms where the UE performs measurements at scheduled intervals even in dormant state. This periodic action ensures that measurement reporting capability is maintained at acceptable levels while significantly reducing power consumption compared to continuous monitoring.
Data Source
AI summary
Provided in the present invention are a method performed by user equipment, and user equipment. The method performed by user equipment is a method for deactivating an SCG in a process in which UE configured with dual connectivity or multi-connectivity communicates with an MCG and the SCG. The MCG is a serving cell group controlled by an MN, and the SCG is a serving cell group controlled by an SN. The method includes the following steps: receiving, by the UE, an SCG deactivation command, and when the UE receives the SCG deactivation command, performing at least one of the following operations: suspending/pausing transmission of an SRB and a DRB on the SCG; stopping a timer T310, wherein T310 is started when the UE consecutively receives N out-of-sync indications on a PSCell of the SCG; stopping a timer T312, wherein T312 is configured with a timer measurement ID, and is started when a measurement report thereof is triggered; suspending/pausing a measurement configuration associated with the SCG; releasing the measurement configuration associated with the SCG; deactivating an SCell of the SCG; deactivating the PSCell of the SCG; and starting an SCG deactivation timer.